Name: Ham and Potato Casserole Recipe
Prep time: 10 min
Cook time: 90 min
Total time: 110 min
Ingredients: 6 medium russet potatoes (washed); 1 ½ cups precooked ham (diced); 4 tablespoons unsalted butter; ½ cup yellow onion (finely chopped); 2 ½ cups whole milk; 3 tablespoons all-purpose flour; 1 teaspoon sea salt; ½ teaspoon freshly ground black pepper; 2 cups sharp cheddar cheese (shredded and divided)

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This ham and potato casserole is really easy to make and comes out creamy by mixing a little flour, butter, and milk. Grab a mandolin and thinly slice your potatoes (you don’t even have to peel them), and buy some pre-diced ham to take another shortcut.

How To Make a Potato And Ham Casserole

For detailed step-by-step instructions, be sure to check out the full recipe in the recipe card at the bottom of the page.

**Step 1:** Thinly slice the potatoes to about ⅛ inch thickness and chop the onion. Set aside.

**Step 2:** Over medium heat, melt the butter in a large saucepan.

**Step 3:** Once the butter melts, toss in the onions, sautéing until translucent and soft.

**Step 4:** Combine the flour, salt, and pepper with the onions, mixing until you have a thick, clumpy mixture.

**Step 5:** Gradually pour in the milk, stirring constantly.

**Step 6:** Bring to a boil for a minute, or until the sauce thickens.

**Step 7:** Add sliced potatoes and ham to the baking dish.

**Step 8:** Drizzle the creamy sauce over the layered potatoes and ham, ensuring an even distribution.

**Step 9:** Cover the baking dish with foil and bake in the preheated oven for 30 minutes. Then, remove the foil and continue baking for another 1 hour or 1 hour and 10 minutes, until the top turns golden brown and the potatoes are fork-tender.

Make This Recipe Yours With Ingredient Substitutions & Additions

Scalloped CHEESY Potatoes and Ham: Top your potatoes and ham with a generous layer of freshly shredded cheese. Think sharp cheddar or gruyere for a golden crust.
Herbs: Freshen up the dish by incorporating a mix of herbs like thyme, rosemary, or parsley. These can be mixed in with the potatoes or sprinkled on top before baking.
Add Bell Pepper: Dice red, yellow, or green bell pepper and cook with the onions to add color and some additional sweetness.
Add Crunch: For an added texture contrast, sprinkle some panko breadcrumbs mixed with a little melted butter over the top before the final stretch of baking. This will give you a crispy, crunchy topping!

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Recipe Tips

Use a Mandolin: To get the potatoes evenly sliced, use a mandolin slicer. It’s your BFF for achieving uniformly thin slices. Just watch those fingers and use the guard!
Patience with the Sauce: When making your sauce, patience is key. Cook it on a medium-low heat to prevent the milk from scalding and to ensure the flour cooks down, avoiding that raw flour taste.
Layering the Casserole: Think about even distribution when assembling your potatoes and ham. Ensure each layer of potatoes gets a fair share of ham, onions, and sauce to make every bite as good as the last.
Let It Rest: After pulling the casserole out of the oven, give it a little time to sit. Allowing it to rest for about 10 minutes will thicken up the sauce and let all those wonderful flavors really come together.

Serving Ideas

A forkful of scalloped potatoes and ham held above a plate with a serving of scalloped potatoes, with raw potatoes and a bowl with more scalloped potatoes in the background

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Ham and Potato Casserole

How To Make a Potato And Ham Casserole